[CRIU] socket will take at least 0.5 seconds to recovery after docker restore done

Yanbao Cui yygcui at gmail.com
Mon Aug 24 21:21:05 PDT 2015


Hi,

Is there any update for this issue?

On Friday, July 31, 2015, Pavel Emelyanov <xemul at parallels.com> wrote:

> On 07/31/2015 09:54 AM, Yanbao Cui wrote:
> > HI,
> >
> > Sorry for give the relative timestamp.
> >
> > Yeah, the gap cover my checkpoint/restore time. And larger than the
> whole migration time.
> >
> > It seems we can not find why the connection hang from the dump file
>
> Well, it's possible, but it would require more advanced debugging :) I
> would
> patch/kprobe the kernel to printk() messages at these 2 points:
>
> 1. tcp_send_window_probe()
> 2. tcp_v4_rcv()
>
> for the connection in question and checked the gap between the real
> repair-off
> and the response.
>
> -- Pavel
>


-- 
Best Regards
Cui Yanbao | 崔言宝
--
龍生玖天,豈能安於凡塵!
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